helianthoidea

from The Collaborative International Dictionary of English v.0.48
Helianthoidea \He`li*an"thoi"de*a\, n. pl. [NL., fr. L.
   helianthes sunflower + -oid.] (Zool.)
   An order of Anthozoa; the Actinaria.
   [1913 Webster]
    

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